Submission #804755

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
804755	2023-08-03 11:09:46	1bin	Highway Tolls (IOI18_highway)	C++14	51 / 100	132 ms	12792 KiB

highway

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include <bits/stdc++.h>
#include "highway.h"
using namespace std;
#define all(v) v.begin(), v.end()
typedef long long ll;
const int NMAX = 1e5 + 5;
ll n, m, lv[NMAX], cost;
vector<pair<int, int>> adj[NMAX];
vector<int> od;
void dfs(int x){
    for(auto&[nx, e] : adj[x])
        if(!lv[nx]){
            lv[nx] = lv[x] + 1;
            dfs(nx);
        }
    od.emplace_back(x);
    return;
}
int find(int rt){
    od.clear();
    memset(lv, 0, sizeof(lv));
    lv[rt] = 1; dfs(rt);
    int l = 0, r = n - 1, mid;
    while(l < r){
        mid = (l + r) / 2;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

highway.cpp: In function 'void dfs(int)':
highway.cpp:15:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   15 |     for(auto&[nx, e] : adj[x])
      |              ^
highway.cpp: In function 'int find(int)':
highway.cpp:33:22: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   33 |             for(auto&[j, e] : adj[od[i]])
      |                      ^

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 6 / 6
• Subtask 4: 33 / 33
• Subtask 5: 0 / 18
• Subtask 6: 0 / 31